Timber-perforating mechanism



l oct. 1s, 1927.

ATTORNEY Oct. 18, 1927. 1,646,188

` G. A. COLMAN TIMBER'PERFORATING MECHANISM Filed Dec. 21. 1922 5 Sheets-sheet g Q .ff 34 72?4 l -36T.' (g

Oct. 18, 1927. 1,646,188

Y G. A. COLMAN v TIMBER PERFORATING MECHANISM Filed Deo. 21. 1922 v 3 Sheets-Sheet .'5

wy. y

EEE 1 ATTORNEY Patented ct. 18, 1927. g

uisurao STATES GEORG-a A. commu, or

PATENT Lorsica.

SEATTLE, vvvasrrrrieren:

TIMBER-PEFORATING MECHANISM.

Application filed December 21', 1922. Serial No. 608,242.

Myl invention relates to the art oftimber Jerforating mechanism. More particularly ny invention relates to providing a mech-l vanism which will efficiently and quickly provide with perforations a pole to be treated with a preserving compound. K

It is becoming the practice to yvery thoroughly impregnate that portiony of poles such as for example, as lare used for telelongitudinal ducts of the pole Vmore freely f,

permit of the passage of the -inipregnating fluid. Y

' Therefore, by perforating the outer portion of the section indicated, the difficulty as respects the transverse ducts is overcome. The perforations lmake available the longitudinally disposed ducts inthe pole rsothat the 25 impregnating fluid under pressure may readily move throughout the desired portion to be treated.

Itis Welllrnown that if recourse be had to high temperature in the treating retortsin order that a thorough impregnationof the wood product may be insured, a mostserious impairment of thestrengthijand durability of the Wood product is incurred. Hence, high temperature during the treatment process must positively be avoided. Moreover, `it has been demonstrated that refractoriness yof many Wood structures prevents satisfactory impregnation even when high temperatures are employed. Therefore, experience teaches that a proper perforating of that portion to be treated seems to present the solution of' ing a positively driven drum when the same is applied to poles which present an undressed surface and therefore an uneven surface. Also, such mechanism tendsto tear the wood fiber. rhoreover, manifestly the cost of the process of 'perforating must be ylimited by the advantage which it contributes to the treatment of. the pele. Therefore, any per forating mechanism, to be commercially use-U1 Y ful, must'be capablenot .only of" efficiently and scientifically performing its perforating function, but it must be capable of performingv its duty economically. ,The Weight of heavy timbers, the tapering character of poles... and the runevenness of 'surface presented by poles render difficult the supplying-of the perforations With a uniformity of depth by any drum process. Intreating ya dressed product, there is no problem of adjusting the*- same for the perforating operation and' hence the drum process mayy satisfactorily serve the purpose in that case butV as explained is not adapted to handle poles yof `dimension which are `not uniformly rectangular.

Furthermore, the importance of treating the pole vthroughout its entire .length is becoming more and lmore :recognized: The perforating pmeans, therefore, should v`vbe adapted to supply the pole for lits entire1` length with perforat-ions, as WellV as 'an given portion intermediate its length. A. In general7 theobjects of my invention are to-overcome thediiiiculties above set'forth.

vide a machine which will perforate the dev sired portion of a pole ,either throughout'its yeo `A primary object of my invention is to promechanism which Willperforate poles ecof nomically and efficiently. A primary object is to provide a perforating mechanism which will automatically center the pole so that the mounting or supporting of the *pole itself Will tend to result in uniformity of depth 'of ,'perforations' anduniformity as to spacings.

A further object of my inventionfis to provide'a perforating mechanism Which -depends for its actuation to provide spacing forl the perforations in the line of thefadvvancing tool upon kthe rotarymovement o-f the ltimber beingfr operated upon. I Also-fit is a primary object to provide aform v'of vperforating tooth Whichivill not'objectionablv tear thewood fiber. 'y n. p

They abovementioned general objects of my inventionl` together with others inherent in the same, are attained by the mechanism illustrated 7in thev following drawings', the

-same Abeing merely preferred exemplary forms Vof embodiment of my invention,

throughout which drawings like' reference ,numerals indicate like parte:

`pos'itiionfrd in the machine. 3o

Figure `1 is aside view in elevationof a mechanism embodying my invention;

Fig. 4 is a view in longitudinal. section of sald chuck and the associated actuating mechanism for said chuck; i

Fig. 5 is a View in part `elevation and sec* tion of the perforatingmechanism5 Figs. 6 and 7 are .views of details of said perforating `mechanism, showing the form of the perforating teeth;

F ig.` 8V is a viewillustrating the pole discharging arm;`

Fig: 9 is a plan view of the driving mechanism of invention; i y 10 is a view in longitudinal section of a modified formv of perforating means; and Fig. 11l'is a view7 of. a modified form of my invention having a steel frame and a plurality of perforating means.

Upon the base frame 12 a vertical frame 13 is disposedfwhich vertical frame 13 supports the overhanging frame 14.

Y The base frame 12 is provided with two` bunks15 and 16 on which a pole` 17 may be temporarily brought to rest while being On one end portion of said base frame, spaced rollers 18 are `mounted to form a rotaryfsupport for one end portion of the pole 17. These spaced rollers`18 are preferably'movably mounted. `On the other end portion ofsai'd base lframe `is mounted on shaft 19a chiick20. Intermediate said spaced rollers and said chuck arepreferablydisposed the two eccentrics '21, which haye bevelled gears 22 which. mesh with pinions 23 mounted on shaft `24. v`On ashaft 25 are mounted arms 26 which function to discharge the pole being treated from the mechanisniherein set forth.

chuck 20 is preferably provided with three radially equidistant disposed slots 27 in which slots are disposed radially movable 'dogs 28, 29 and30, two of which'may be preferably provided with spikes" 31, while the'th-irdmay be preferably' provided with fa sh0e32 whereon the end of the `piling may restafter it is first moved against the chuck andubefore it' is securely, clamped therein.

f -The dogsyfZS,4 29 and` 30 have rackleeth `331011 their rear sides, each of which mesh witlr pinions 34, saidpinions` in turn mesh- `ingwith pinions-35.. andl these mesh with rack bars A36. `These bars are rigid with a disc 37 which abuts against a nut 38 and sai-d disk 37V is provided with flanges 39 L which hook loosely overa flange 40 on the chain 72and sprocket` wheel 73.

14 4 is disposed` a perforatingmechanism preferably consisting of a compressed fluid cylinder 45 mounted on a base member 46,

This base member is slidngly disposed on vtrackways 47 extending lengthwise of the upper members `of the overhanging frame. Between the lower members of the overhanging frame 14 isa perforating diskf48` mounted in a 4sliding member 49, the `same being vertically"A and also' longitudinally `slidingly movable between said members.

sure may be maintained continuously inthe upper end of the pneumatic cylinder whereby a substantially uniformf pressure may be .exerted upon the piston 5l.` The tank 52 `is connected by means of the pipe 57 and the flexible connector 58 to the lower end of the, cylinder 45. Y Y

A regulating valve 59 in pipe 55 maintains the pressure` in tank 53 :at a `predetermined magnitudo lower vthan that in tank 52. `A

thre`e-waly valve 60 of any well known design in pipe' 57 serves to establish coniunication' `between said lower part of cylinder 45 and the exhaust outlet 61 ofpipe 62. Thus, toV

lift the perforating means 48, tli'e valve 60 is turned; to admit the `relatively higher pressure of tank tothe lower part of higher than thatin 53, the piston 5l is forced upward against the pressure of Atank 53. To lower thepiston 51 and itsperforating means 48, the valve 60 is turned .to exhaust-- ing position so that the pressure inthe lower part of the cylinder 45 isdissipated into the atmosphere. j i i Thedrivingq mechanism includes a motor 63 connected by pinion 64 and. gear wheel 65` with shaft 66.A `Thel main shaft 19 is driven from.` shaft 66 by means of sprocket wheel 67,` sprocket chain 68, sprocket wheel 69,idler shaft 70,` sprocket wheel 71, sprocket Sprocket Tank 53 is also connectedV cylinder 45, said tank 52 pressure being wheel 67 is controlled by clutch 74 which is r operated by a lever 75 and `handle 76; A feed screw 77 is in threaded connection with the base member 46 and said feed screwis actuated from Vshaft 19 by sprocketwheels 78. and 79 and'sprocket chain 80. Shaft 24 is driven by sprocket 81, sprocket chain 82 and'sprocket wheel 83 on shaft 6G. Clutch 84, movable by le`ver`85 is used for connectingi and disconnecting sprocketwheel 83 and shaft 66. Shaft 25, on which are disposed arms 26 for discharging the.v pole, is driven from shaft 19 by -sprocket wheels 86 and 87 and sprocket lchain 88. Clutch 89 andleve'r 90 serve to connect and disconnect shaft 25 and sprocket wheel 87. Friction wheel 43 on shaft 44. is driven by sprocket wheel 93, sprocketwchain 94 and sprocket 95, clutch 96 and lever 97 serving to connect and. disconnect shaft 66 with sprocket 95. Friction wheel-91 may be moved intoor out offrcon.-

tact withV pulley-41 by lever 98 and linkl 99.

In the driving diagram inFig. 9, some of 1 theV parts are -moved out of their normal position to facilitate illustration, the same serving to set'forth merely one form of driving means. My invention is indifferent. as to the particular form of such means eX- cept las herein V'indicated otherwise.

In the form of perforating means. illus-k trated in Fig. 10, a compressed fluid. cylinder 100 is provided with a piston '101 having a pressure face 102 on its lower side having a pressurearea with a diameter equal to that of the cylinder, and havinga pressure face 1.03 on its upper side relatively smaller than 102. The core wall 104 limits the pressure face 103- to an annular ring form, so that a constant source of pressure may serve both tdlift said'piston and yieldingly maintain the samein a depressed position. The cylinder 100has mounting105 by `which itis longitudinally slidingly 1 supported between channels 106 and 107. Thexdisk mounting member 108v is vertically slidingly mounted in mounting on .guides 109.: Gripping means 110 in the form of a` split nut of well known design may be used to releasably engage the feed screw 111 so that said cylinders may be located selectively on said kfeed screws. -Conduits 112 and 113 serve to admit fluid pressure to pressure faces 102' and 103 respectively. Flexible conduits k114 and 115 connect conduits 112 and 113 respectively to a three-way valve 116, wherebyv the fluid pressure maybe admitted'to the pressure face 102 and exhausted therefrom as desired. In the modified form, Fig. 11, two cylinders 100and 117 of the preferredv formare shown mounted `on a feedscrew `111. Pipe 118 connects valve 116 to tank 119, which serves as a common relatively constant source `of luidpressure for both the pressurefaces of.

each of the pistons in cylinders 100 and 117. Flexible connectors 120 and 121 connect cylinder 117-to .the connections 122 and' 123 of the flexible connectors 114 and 115, said connections operatingsimilarly to that described for cylinder 100. Having two such perforating means operating simultaneously, it is manifest that the time for completing a given perforating operation*V is divided in two. i The disk 48 is preferably provided with demountable vteeth 124. These are prefere ably provided betweenfdisks 125, 126 and' 127 These may be arranged in single rows rows Jof'fsaid perforating teeth provided.

These teeth are preferably provided with a relatively short conical point 128.l Above thepoint Vthe walls of the tooth may be concave at129. yThe heads 130 serve ytoanchor, the teeth in the disks'125, 126 and 127 when these Ydisks `are clamped tightly together` by meansof bolts 131.' 'Y

The modeof operation of'a perforating device embodying my inventionI isfasfollows: Aprile/17 is brought to the perforating machine by any well-known suitable feed mechanism' such as an `overhead. crane or chain; belt. `At first itis placedon the bunk 15 or on bunk16 and rollers 18. 'f The eccentrics 21 serve to lift and move thepole to the chuck 20. Thereupon, thepulley'43 is caused to engage the pulley 41 whichfimparts arotary movement to( the nut 38 through the `key 42. Since thev nut 38-is y threadedly mounted upon shaft 19, thevrosame to rotate and this in turn impartsl its rack 33, on the baseof each dog, causing the same to move towards the center ofthe chuck in slots yl 27 .That is; each of they dogs v28, 29 and 30, carried by theracks 33,'are caused to move. simultaneously and uniformly towards .thel center ofthe chuck. Thus au# tomatjically, the pole is practically centered as respects the chuck. j lThe opposite end is rotatably supported on rollers 18.

t Vhen the poleis thus adjusted in'. position, the c'huck'20'is causedto rotate so that the rotary movement is imparted tothe pole 17. Thereupom'V compressed' air yis exhausted from the lower part of cylinder 45, which results in the forcingdownward of piston 51 and this. in. turn forces thev disk 48 vdown upon the rotating pole 17, causing the teethk to perforate'the pole causing the faces 132 of the disks 125,f126.and 127to rideupon the pole. Since the pole is rotating itwill cause the disk 48 to rotate.` As disk 48 rotates, the

screw thread 77 v also is caused to rotate ata preedetermined irate so that the disk 48 is caused to travel in the helical path about the Y pole.' Any unevennessin the pole is compen-l satedfor by the raising of the piston against lao rotary movement tofpinion 34, which engages ,No

trated since experience has taught that said :form avoids injuriously' tearing the wood `ber. The form of the tooth as` indicated insures a clean-'cut perforation.4 Vhen the perforating operation has been completed, as respects that portion offthe pole to be per forated, the actuating mechanism connected with shaft 19 is disconnected by means of clntch. `Mi and since the feed: screw 77yis actuated by means connected with shaft 19, the stopping of shaft 19 obviously-simultaneously stops the feed screw 77,. Thereupon, compressed fluid is admitted tothe lower side of the piston 51 and the perforatingdisk 48is' raisedas respectsl the pole. The dogs 28, 29 and 30 are caused to release their grip upon the pole 17` and the eccentrics 21 are caused` to engage the` pole `and move it clear of the chuck 20. Thereupon, the disengag ing arms 26are caused tofthrow the pole to one side which occurs when the arms 26 are caused toassume the position indicated in dotted line in Fig. 8. f f

The modified form insgeneral operates in a manner similar to that above described. Obviously the time required for completing the perforat'ing `of a givenportion of a pole, or the entire pole, `is made` just one-half by having two performingmeans working perforated-` simultaneouslyas indicated-inFig. 1l.'

number of` said perforating means in excess o'f two, all similar in` construction and connections tothose described, obviouslywould reduce the time required to complete 4the perforating operation and preferably would beyprovic'ledl `whenthe .entire pole is to be The disks are preferably operated by the same feed screw/*lll and jthese perforating cylinders `are preferably releasably connected `to `said `feedscrew 111 so that they can beadjusted toany Adesired position thereon in order to cause each -perforating disc to .perform `one-half ofthe operation. A i

Obviously, changes .may be made in lthe fornis,'dimensions, and arrangementof the parts of my invention, without departing fromthe principle thereof, the' above setting forth only preferred forms of embodiment. IclainrzlY f *i l., A pole per'forating mechanism embodying a pole adjusting and supportingl mechawhereby a pole may be rotated while slipported; `and' a perforating means lyield ingly pressed againstsaid pole, which means is automatically movable lengthwise of said pole asthe latter rotates and isV caused by contactinglsaid pole to move relatively over' Said pole circumfere'ritially` insyneh'ronism with therotation-of said pole. x

igeaefiss 2. Apoleperforating mechanism embodyinga base frame;` spaced rollers mounted 'on one end portion of said frame,-whereby.one

nend portion of said pole may be lrotatably stipportedya chuck disposed at the other end of saidbase fram'eymeans mounted on said base frame intermediate `said rollers and said chuck, `whereby a pole may be moved up and down and longitudinally of.

.the frame and adjustably held against said chuck; a vertical frame on the chuck end portion of the base frameyan overhanging nismwith the rotation of said pole, and suit- `able actuating means for said chuck and perforating means. f 3; `A pole perforating mechanism embodying a base frame; spaced rollers mounted on one end portion of said base zt'rarne,`

wherebyone end portion of said` pole may berotatably supported; a chuck disposed at the other end of said base frame, means mounted 4on said base frame intermediate said rollers and` said chuck, whereby `said pole may be moved up anddown Vand longif' tudinally of the frame and adjustably held against said chuck; a vertical frame on the chuckend portion offsaid base frame; an overhangingframe "supported` by said vertical frame; a perforating means .slidingly mounted on said. overhanging frame, .said means-being causedjby contacting said pole to move relatively over `said pole circumferentially in synchronism with the rotation of said pole, pressure means whereby said perforating means may be caused to yield? ingly press` upon the pole; a feed screw for.

ing a base frame ,f spacedl rollers mounted on one end portion offsaid base frame, whereby one end portion of a pole maybe `rotatably supported; a chuck disposed at thegother end of said baseframe, whereby said pole lll] may beadjustablyheld and rotated; grooved eccentric means mounted on said base frame upon said pole with a uniform pressure and the rotary movement of said pole may be caused to actuate said disk; and a feed screw whereby the perforating disk may be actuated lengthwise of the overhanging frame.

5. In a pole perforating mechanism, the combination of means to support and rotate said pole on its longitudinal axis, said axis being fiXedly held; means to perforate the same; and means tocause an automatic relative movement between said perforating means and the pole lengthwise of the pole as it rotates, whereby the perforations form a spiral around the pole, and whereby said perforating is one continuous operation throughout the section to be perforated.

6. A pole perforating mechanism embodying a pole adjusting and supporting mechanism, whereby a pole may be automatically centered and rotated while supported on its longitudinal axis, said aXis being liXedly held; a plurality of perforating means operatively disposed with respect to said mechanism, said means being caused by contactpole circumferentially in synchronism with the rotation of said pole, whereby a series of perforations may be made in said pole simultaneously; and actuating means whereby said perforating means may be caused to automatically move lengthwise of said mechanism.

7. A pole perfor-ating mechanism embodying a pole adjusting and supporting mechanism, whereby a pole may be automatically centered and rotated while supported on its longitudinal aXis, said axis beingxedly ing said pole to move relatively over said.

held; a yplurality of perforatingimeans operativelyV disposed with respcctto said mechal nism, said means being caused by contacting said pole to move relatively over said pole ciroumferentially in synchronism with the rotation of said pole, whereby a series of perforations may be made in said pole;

actuating means whereby said perforatingY means may be' caused to automatically move lengthwise of said mechanism; and means whereby saidpperforatingmeans may be selectively disposed upon said actuating means. 8. In a pole perforating mechanism, the combination of means to support and rotate said pole; means to perforate the same, saidy Vmeans including a wheel with teeth which engage the pole; and means to cause an automatic relative movement between said perforating means and the pole lengthwise of f the 'pole as itV rotates, whereby the perforations form a spiral around the pole, and whereby said perforating is one continuous operation throughout the section to be perforated. 1 l l 9. In a pole perforating mechanism, the combination of means to rotate said pole;

and a perforating means disposed to bel GEORGE A. COLMAN. 

